Mechanical musical instrument.



4PATENTND OCT. 9, 1906.

W. P, GOOPN. MECHANICAL MUSICAL INSTRUMENT.

APPLICATION FILED MAY 29, 1905.

' 10 SHEETS-SHEET 1- 6320 f e;

@N9/afnam@ Mgg/j A PATENTED 06T. 9, A1906.

, W. F. oooER. MECHANICAL MUSIGALINSTRUMBNT.

i No. 833,026. l y

APPLICATION FILED MAY 29, 1905.

No. 833,026. PATENTBD CCT. 9, 190e.

W. F. CCCPER, MECHANICAL MUSICAL INSTRUMENT'.

APPLICATION FILED MAYZQ, 1905 l0 SHEETS-SHEET 3.

5 A1\ }.sss,o26. PATENTED 00T. 9, 1906.

y W. F. COOPER. MBGHANIGAL MUSICAL INSTRUMENT.

APPLIOATION I'ILED MAY 29, 1905.

1o SHEETS-SHEET 4.

.PANN-,TED OCT. 9", 190e.

W; P. 000mm Y MECHANICAL MUSICAL INSTRUMENT.'

v.APPLICATION FILED MAYZQ, 190.5.

10 SHEETS-SHEET '5- 'PAT'BNTBD 001.9, 1906.

W. F. COOPER.

MEGHAMCAL'- MUSICAL immuun?. I l APPLICATION FILE-D MAIY Z9, ,1905"- 10 SHEETS-SHEET 6.

'Np. 333,026. I PATBNTBD 00T. "9, 1906.

. W. 00m-m3. A

MECHANICAL MUSICAL NSTRUMENT.

' ArePLIoATxoH HLBD mma, 19051 I .1o SHEETS-SHEET 7,

??? Maig@ .a

No. 833,020. f yPATBNTLD 00T. 9, 1000. W. F. 000PER.

MECHANICAL MUSICAL INSTRUMENT. APPLICATION FILED MAYzQ, 1005.

10 SHEETS-SHEET 0. Y

No. 803,026. PATENTED OCT. 9, 1906.

` W. F. COOPER.

MECHANICAL MUSICAL INSTRUMENT.

APPLICATION FILED MAYZS 10 SHEETS-SHEET 10 WN aan lTmTTnn eTaTne natifsTT ormoni,

WTLLIAM r. scorsa, or Nomi/'ann "omo, assrenonforoNE-HALF To THE A. nonnen oo., er NORWALK, orne, A- CORPORATION OF OnlO. Wissenstest.. tensioni.. marsans-:ari A I no. eeaoee,

To all whom vit maiz/concern; l

.v Be-it'known that l, WILLIAM l?. COOPER, a citizen of the United. States of America, residing at Norwalk, in the county oi Huron and State of Ohio, have invented certain new and useful improvements in Mechanical Musical Instruments, of which the following is a specification, reference being had therein' to the-accompanying drawings.

'rov

' 'ningsheet of struments o operationof Athe pneumatic'allyloperated mechanism are f:centained lin a comparatively large casethat is located adjacent a piano or similar keyed instrument in front of '2 5 the keyboard, certain keys`c0ns'tituting corn- Bpenent lparts of the` pneumatically-operated mechanism rprojecting over vthe keys of the keyed instrument vand depressing the same irl-such orderv andmanner as to effect playin of' the desired composition. The par-l l Aticular eys o erate successively or in groups,

- slightly," and its osition infront .of and over being depen en't `upon the location and ar-trangement ofthe perforations in the travel# ing sheet oipaper. characters exp'enelve, cumbersome, and unthe Vkey'hoard o the instrument to which it is applied'preventsl the, playing of the instru` ment inl the ordinary manner until it has 4o' been removed.

lt is the-object of my invention to produce an' apparatus ofnovel form and'const-rnetien.

4.which can .bej ;applied to" and .removed :from keyed instruments' of. ordinary. construction, such as upiightpianosand the like, without alteration' oi .the instrument ,or its casing in any noticeable manner and which will not 'detract ,fromthe appearance` o'l the instrument -towhich it is applied or'in any manner ,o interfere with orrender-diicult the ask of ner by those possessed of the requisit al v playing the instrument in the ordina r man-n sill. In carrying lmyinvention into eliect I so 4 construct and larranggge theV traeker-hon,

Speecaton of Letters Patent. l

Application filed May 29,1905. Serial No. 262,875.

Apparatusof the above Patentes oct; 9', lecci.V

which is'thatpart of the device that contains /sheet ofpaper to travel-over the terminals of ducts leading to the pneumatically-operated mechanism, that it can be readily arranged in operative position in iront of the keyboard oi an instrument to be played mechanically, and When desired it can be swung 'under the keyboard and out of the Way and out of sight, so that the instrument can be played upon'in the ordinary manner. All the other .appliances and mechanisms of inyirnproved apparatus are, with the exception of a pair of operating pedals and certain appurte nances theieof, arranged Within the casing of the instrument and. completely 'concealed from vievvand thev pedals alove referred to are so constructed that they,` t0o,.can be 'folded up against the lower iront. board of the piano and so covered be unobservable. A

@ther objects and im rovements Will be presently develo ed; an 4my invention consists in the nove construction, combination,

and concealed as to and arranvement of parts hereinafter de- 'p 8o f i l have illustrated my improvements in the accompanying drawings, wherein like num;

scribed, and brie'iiy set forth in the claims.

whistles 'Fig L .el a fragmentary perspective view 'v (fliers and lettersno reference' designate cdrre- .spondingparts In the-.several iigures,and.-in

'ofthe lower portion of an upright piano with my Aim rovements ap lied the lower` front, l

dp and. the mechanical.l playing apparatus swung around's as to iaf4 board' .eing remove the trac-kerel; 0X lSVV-ung clown toits inoperative 9g.. i ford a view of the rear portions of the sal-meiV -FigZ'is a perspective `view of the same. with..

position an'dfwith the pedals folded up; Fig. l.

3 is 4a similar view to Fig. 2, but with. the

and the .pedals .turneddown" to-theiroperae tiveposition. Fig. l` 1s a perspective JView' showing the lower part of an upright piano- ,y

torte' with my. improvements applied and' -in ne piano being removed. Fig". A5 is atop .ra position for operation, the lowerfront board n view, 'on an enlarged i. scale, ofithc tracker-box, its" supporting devices, a-Ii'dlap'" purtenant parte, a. ortion of the covering be- 9S tracker-box raised to its "operatweposltmn' A ,scaletlian being omitte 'detachedhtrom one piano: `Fi 7 is afront elevation of the saniefon a s ightly-larger 6, the tracker-box and. pedals Fig. 8 is an endelevationof the same, on the same scale as F ig. 7 the motorapparatus being removed. Fig. 9 is a sectional View on the line fr: of Fig. 5. Fig. is a detail sectional View on the line 'y y of Fig. 5. Fig. 11 is aw ertical sectional View, on an enlarged scale7 through the center of the motor-pressure regulator. Fig. 12 is a front elevation, on an enlarged scale, of the controllerebox with the cover thereof removed. Fig. 13' is a vertical sectional View of the con troller-box on theVv line :r m voi Fig. 12 with the coverin osition'and looking in the'direction indicate by ,the arrow.. lig. 14 is Aa sectionalv View on the line y 'y of Fig. 112. also Y. of. the pedals.

looking in the direction of the arrow. Fig. l5 is a detail side elevation, oart'ly in section, 'of the pedals, showing their coiniection with themainbellows.. Fig. 16 is a top `plan View Verse sectional View through one of the eX- pression-coi'rtrollers. Fig. 1S is va iront elevation of a portion of the expression-controller board andthe expression-controllers, the

top of one of thelatter being removed. F ig.

19 is a detail plan View of part of the expression-bellows; and Fig. 2O is an end elevation of the playing mechanism, showing "the tracker-box in its raised osition thereon in ffull lines and in its lowere position in' dotted lines. y

' 11n the following specific description letters ofvreference will be employed to designate parts or groups of mechanisms which may be describedby general terms and reference numerals to designate individual parts.

The gen-eral arra/ngemenz.-"l`he entire apparato-s, with the exception of the trackerbox the cdal devices and certain levers bv l p 1 e ,means o'which the operation is governed and .coi'itrollerh arranged in the pieno A withinl the lower iront Aboard B and issupported 'by two end iframes Land 2, that are connected together by' 'certain component parts foi the mechanism and by a metallic bar 3, that terni" 'lates in a-hinge member e, a seoond .metallic bar 5 being carried at one side near' the bottom and thisl bar terminating in a hinge nreinber 6. The hinge members 4 and 6 are attached by removable pintles 7 7' to hingemernbers suitably arranged within the piano-.casegand attached to the same. Two metallic barso 8 extend upwardly from the bar and then 'outwardly beneath the lrey board of the piano, and these bars serve as 'supports iorvthe tracker-box C. The main bellows are desinated D D, and these bellows', as well as-t e main-bellows reservoir E, are attached to the bellows foundatiornboard 9. Adjacentvthe main-bellows reservoir is located the motor-pressiire regulator. F, and alongside the latter arranged thecontroller- Fig. 1'7 is a vertical transf Gr', the regulator F' and bei G beingl attachecl to the bellows foundation-board 9 and both bein in communication with reser Voir E throng tion-board 9. f

Above the controllerbox G are the two ex.'- pr'ession-controllersll l, these controllers be ing carried by an expression-'controller board 1,1, which 'isl formed with' certain internal .channelsand ports that are in communica-` tion with the controllerborr G by a conduit, -12 and also in conininmcation with the erfrpression-controllers 'ii ,i and withthe chenva channel 1() in the founda? nels'and ports of the nneuinatiaotion mech4 anisin of the primery hoard J enduits. con nected parts.

The controller-box G is connected bya com duit 13 with a motor K, and amotoreshat 15.

extends from the motor under the hars and carries one sprochetdvheol 16-011 its end',l from which mot-ronnie communicated by a chain tothe mechanisni of the traclroimboir` C.

ed, respectively, 2t) 21 22) are pivotedon a bar 23, projecting from the lett-hand side of the tracker-box, these being thez sustaining and expression levers, by means of which the 'position beingplayed is ei'ecte The tempodever 17 is connected .a rod 24, a hell-crank 25, 'arod 26, and a crank 27 with a rock-shaft 28, that extends through the controller-box, G, aanlby the movement of which rook-shaft the vmechanism within the controlleiebox is operated. The sustain ing-lever 22 is connected by a horizontal roclvshait 2Q, that has a crank-arm on nach end, to a vertical rod 30, which is in turn con` nec-ted' to e pivotal lever 31, that engages rod 232 of' the si1staining-pedal of the piano. The e1q3ressiori-levers 2() and 21 areconnected. respectively, roc.l -sliafts 33 .'14, that haare cranked ends and are connected to vertical rodsv 33 PAQ that 'conrmunicate motion toa pair of roclrshafts 35 36, that have downa bear, respoirively, on the Inova-ble bellowsboards of the expressioncontrollers lli l. Motion" ie also impe ted by the rods 33 311. to a second set ol" rock-shafts 37 38, that extend into the expressie `controllers H l and op erate the nii-iciianinn contained within the same.v

The pedal nliiechanisinis designated l@ and is arranged in iront oi and at the lower edgeof the liront board. oi the piano, the con struction and arrangement of the parts of this mechanism being suchthat the entire structure may be folded up 'against and partlj),r into the iront board when lnot in use, so as to be concealed :trom sightand out of expression, phrasing, or shading of they com @wending spring-arms .35. 36, .that

, o thebars :flatchfb'lo k 50,Which yvhen'thetracker-box is '55 number seaoaeV piano in the usual manner.

., vThe tracker-boxe() is connectedby .ducts 3 9 With the primary boardJ.

` eral parts'in detail.y

The pedalv mecha/m saperne lower sent' io.,boa'rd B of the pianoA-is formed With a recess40, ,andv at the lower edge of this recess a.

lboard orf-rame -41`is hingedto bare 41 which areoarried-by the base-board of the main V`bel-- lows D, andwliih bars extend Athrough an 'I 5 opening at tliebottom of the front .board B, and upon thisbo ard or frame are arranged tWo Vhinged"pedals42 42, which are connectedby V.jointed levers'` 43 43 -With themailf bellows The pedals 42 `42 each carry alug `io 43 at its inner edge, and theselngs'engage, .when both-:pedals are depressedA simultaneously, with the, inclined ends ofjarms. 44," carried bya 'rocking and sliding plate 45, that' is pivotallyattached vtofa .curved spring 46, z5 'mounted' on,the board or frame 41.

When, however, the pedals are separately or ,altere nately depressed,- the plate 45 rocks or swings on. .its .pivotal point, when one f of the lugs .'strikeszon'e of the inclined ends ofone of the '3o arms 44, and thus throws the aim backwardly and out of position for engagement With the Bothfpedals are depresse-d simultaneously and engaged, as above described, when it is,

desired rto foldl the'pedal-board or frame up `agairnstthe frontfboardil, and When so foldedup theboard or frame is heldin positiony by Va latch 47 and as theboard is folded up the curved portion of spring 46 strikes the botlo Atom ofthefrecees 4U and bein straightened outf'oreejs the plate 45 upward y, which motion disengages the lugs'43of both pedals;

from'the arms e4 and frees the pedals, so

' that' when thev board or vframe is again :flowered the pedalstvillassume their proper,

' lyvorking position.

-r' The tracker-bom.Thetrefcler-b oX-C carries re pivotally at-f two brackets 48 4s, that.' *t'ached atl' 9 49 to fastenings 53, carried by 8, and 'the brackets` each carry a elevatedyis engaged by a triangular head 51,

carried by a strong spring 52, mounted on the yside of the casting, attachedfto bars by 6o 61, 'the latter bein formed with openings.

; equaljin number to-t e keys-of the piano' and being connected by ducts 62 ywith a movable golntin -bar 63,' that is carried by the brach# ve'ts yan' thathas openings'corresponding i'n the paper-roll. rangement of lio'the ducts opengsin this ljhintingibai' registering when. the l tracker;

box is in its elevated position-,With similar openings in a stationary j ointing-bar 64, carbar being connected by the ducts 39 With the ried by castings 53, and the latterjointing- 5 jHaving thiis described the general ar rangements of parts, I'Willfnow; proceed tovv -describeunder appropriate headings the sevis mounted on a longitudinally-m'ovable-z shaft-68 and carries a clutch member 69,

'adaptedto engage a clutch member 70, that is carred by a 'sprocketewheel 71 ,fixed on the longitudinally-movable shaft 68. The shaft 68 carries on its inner end a pinion 7 2 that at 'Y one position of'the shaft meshes with the gear-Wheel 66. The clutch member 70 is formed With a'groo've 73, that is embraced by the bifurcated ends of a pivoted lever 74, which has a laterally-extending curved arm 75, that is struck by va pin 76 on the tempo-L lever. 17 When the lever is moved inwardly to the point marked Btewindiy on' the bar 19,

the movement rof -the lever 74 `producedthereby brin ing the clutch members 69 and 1 70 into Ines and throwing the pinion 7 2 out of mesh with the gear-Wheel L66. .A chain 77 connects the sprocket-Wheel y7i With vtle sprocket-wheel 16 on the motor-shaft 15, and a chain 78 connects the sprocket-wheel 67 -with a sprocket-wheel7 9, that is fixed cna clutch-shaft S0, connected to the shaft 81 of By this construction and arparts the takeup roll Will be driven positively in' one direction when the clutch members 6 9 and 70 are out'i mesh, f and the paper-roll be driven positively in an opposite directiomwhen the clutch members 69 and 7() are in meshwith oneaother. 7

A sheet -of suitablyiperforated aper bis Wound from the paper-'roll around t e'4 takes up roll and in its movement passes over the tracker-bar, admitting air to the openings therein accordingly as the perforations inthe paper are brou ht into register With the openings inthe trac er-bar.

The expression-levers 2O and 2 land the sustaining-lever 22 are, as beforedescribed, pivotally mounted on therm. 23, andthe rods 20',` 21'., and22, by 4 W 'ch these levers are connected te ,the rock-shafts 29 33 34, are connected to an arm 29, that projects from the bar 8 in rear of arm 23 .by s irai. springs 82', which are' attached at one en tosaidarm 29 and vat the' other tablocks 83, carried by' said rods 202,21", and 22', which bloclrs also serve as stops to limit the inward movement The rods ee', 21,', and 22'. are peet-erle@ their respective levers 20,21., and 22 inv alinement with the ivots .49 49. of the tracker-box brackets, .se At at when the i tracker-box' is .swung downwardly the arm 23 andthe said levers can swing downwardly also.

The ,fem `esstofn-controlir.-,-Referring 'to 17 o the drawings, which is a vertical 'sectional view taken through the board 11 and one oi the expression-Connellers, the eX- pression-controller H being thelone shown .in section in this view, it will be observed that the board 11 is provided with an up er channel 84: and a lower vertical @hanne 85, the channel Se leading to the primary board and the channel Se being in communication with` the cond' 12, leading tothe controll'eibox The expression-controller is in the form pf a small bellows that is composed of a-rectangullar openirame 86, a movable beliovv'shoard fare all repeated in a screw 105.

vtenant parte.

87, hinged to *he "rarne 8S at 88, and a ierible air-prooi egulnent S9, that forms the sides one end of the bellows structure, which with its appurtenant partsconstitutes' one ofthe expression-controllers. y The frame S has at one side an inwardlvprojecting bar '90, to this baiis attachedv a flap other end to a block 92, mounted on the inside ol the bellows-board 87, this Hap being designed to control a port 93, leading l rom `the channel 85 to within thek controller. The

bellows-board 87 carries a small plate Ql, that rejects laterally beyond the side oi. tl'ie'belowe-board, and a spring 95 is arranged alongside the expression-controller H, the free end of the spring extending under the `late 94 andthe spring tending to press the iellowsboard 87 outwardly to the position shown in Fig. 17. Alongside the port 93 a second port- 96 is provided, this port also aii'ording communication between the channel 85 and-the insideof the controller H, and over this port 96 is arranged a dapwalve 97, that' is pivoted to a bar 98, fastened to expression bellowsb oard 87. r .A small spring 99 is connected at one end to the valve 97 and at lthe other endl to the bar 98, and this spring tends to main? tain the valve '97 in open positions-that is, raised relatively to the port. The rockfshait 37 passes through a groove 10i) in the hoard 11, and this rock-shaft is provided with a downwardly-extending end 101, thatis attached to the valve 97 by means of' an eye 102, and the rock-shaft 3"! extendsthrough the frame 1 and has an arm. 103 on its outer end that bears upon the top ,oit a block 184, that is adjustably mounted on the rod 33',-

, channel leading to that portion of the channel of the primar board that isconnected' to the neumatics w ch operate the hammers of the ass strings of the instrument, while a simin, that attached at itsy @sacas larcnannel 107, that communicates b a )ort 108 with the expression-controller l, ends to that ortion of the channel of the primary boar which is connected to the pneumatics which operate the hammers of the treble str in of the instrument. The channel 85 in thelovfer 'portion of the board 11 isin. communication with expression-controllerl I `by The operation of the expression-control! lers is as follows: The main bellows D D, be.

ing actuated will create a partial vacuum in the-main'reservoir E, and, the air beine eX- hausted from the motori-bellows througthe conduit 13 and the controller-box G, the port 1 0, and the motorressure regulatorF, the motor-bellows Will li impart motion tothe motor-shaft '115, through which and the sprocket-Wheel 16 motion will be communicated to the tracker-box meeham'sm. The perforated sheet of paper in the tracker-box mechanism inpassinvr over the trackerlbar will admit air through the perforations in the paper into the duct 39, and this .admission of air to the several ducts will of course depend upon the ositions of the perforations inthepa er., he pneumatico y means of which t 1e ammers are operated are caused to collapse, andthus actuate the hammers by reason of theabstraction of air from the pneumatics by the suction created bv the` main bellows, and this action takes place as soon as the air has been admitted through the ducts 39 by the movement of the paper in the `1nanner above described. This action of the tracker-box and the pneuinatics is old and well known, and l', have only referred to it in order to render clear the function and mode ofoperation of my improvements. It being understood that the pnenmaties are -operated by the extraction of air therefrom, it will be readily understood that the amount of air4 abstracted in a given time willv determine the force with which the pnenmatics will o crate. Thus,

for instiince, vif all the air-is a straoted ve suddenly from a pneumatic the latter w'l collapse suddenl force, whereas i a less uantity vthan 'the maximum quantity of air 1s .abstracted from the pneumatics by the main bellows in :the

.same period of time the pneumatic will ,col-

lapse 'witl'iout an appreciablcdiiference in the time consumed in the operation, but' with less torce, Iand the hammer -Will there-y fore' 'strike the strings' a softerblow lthallin the irstinstance.

e set in motion and. will' and with a very great.

The abstraction 'of `air from the .pneumatics necessarily involves .-a.

IIO

IIS

1 :when they' are thrown into operation to censo the hammers to strike 'the strings; A rei the ort 16,'openn in to the chennei i0, that ileal` s 'dreotlyto t e mein reservoir E, A

flew of au# image the primervtoard @het nel, thro h the 'clienneis of trie expression- .motion ofthe-pneumatico '1n the normei V po,s1t1onoi the erts the spring-'erm 35 is out of Contact with the'plete 45 on the beiloWs-board, and the rst movement-of the eXFression-lever has the effect, of closing the 'v ve 97, this' closing being effected grad- '.uaily or rapidly 'et the will oi the operator. ..A. 7u1'tlier .movement of the expression-lever plate 215,end thereafter the further movement of the expression-lever will csuse this spring-armato bear with' increasing strength l 4ansinst the plate on the bellows-board, and,

f ltin ofthe spring 95, the yatin osplieric preseurer upon the bellows-board wir! gredueily Pincreese in power .according es the spring- 9511-18' pressed with .mereesing torce L against'the bellows-boord, end the beiowsboard will therefore stiiugiuwsrdly end' brine "theapl, raduelly closets port 93,1Whic pf; `i1,c` tion1 will. ave-the .effect of throttlnigthe fsuctiomfend, .thereby decreasing tire vfonce which Will be exerted by the' pneumatico versenovement of? the expression-.liever wild.

v,of the parte, end the reverse movement of the suitable retrecting-springSZ, connected to 'Thef conl Toller-box.f'ihermotor-controlier box G (see Figs. 12, 13, ifi) is ettaciiedfin any suitable 'manner tothe bellows 'oundetionf board 9 end-islet rcctangulerformin outiine and of somewhat greater depth et its upper 7 Aendthen et' its lower ond and isp'rovided with l-5"o'se;removable to or, cover 1 11. The box G 'is divided central y bye pertition 1 Minto two .compartments 1 13 and 114; Two

erts

I designetedf-respective1y,i 115 end 116 use armed in the back of eompsrtment H3, tite ort.` 115 opening into e channel 117 that ads' ,to themotor-pressure regulator end Plate 119, which isfo'med with e. long taperguide-'strips 121.121 ere errengedet the sides of the' plate 119A, thestrips serving yto guide e fj sliding velvewl end maintain it inclose contact Wthtlxe plotti.'k AThe'velue 1 22 heeft 65 4lug 1,23 onits;`outer eidejsnditofthss .sesame brings the erm finte Contact with theA action being opposed to theresiient ficfof-course result, in ereversel. of the actionv 3o.- I

expresslon-lever is effected by Ineens of ev leverbeing et the rewinding'positiou, the

pivotelly etmcised e rod 124, which is voteiiyetteelied :it-its other end to e oren i 125,

fixed on the rook-shaft 28. The port 116 is 'normally ciosed bye valve 126, that is hinged 1 by mee'ns of e sti'ip of fexiblemeterial '127, u fhich'orms the fece et the valve and extends below'the seine sind isffestened etits edge oy' 129' is-ettachet-the velve 126 and extends Within the range of motion of the cronk 125 end is struck bfgLtlet cIenl-, so se to iiftthe valve l1 26 from its soot et e, certain', osition of the crank, o, spring 130 normeiiy olding the velue to its seet. The conduit 13, leading from the motor. K, opens into the compertinent 113,. and the air drown from the motor passes through the compartment 113 to the mein beiiows through the post 115 or the port-116, 0 1" both, ecoodinglyes one or both of the selves 122 126 ere opened.

' When the rock-shaft .2S-remedied isy the jmovenient of tie tem o -1everf?`, the slot 120 isopencd more or ess, according to. the amount of movement of the tempo-lever,

end consequentiy egreeter or iess amount of sir is drawn in e' iven time from the motor, and thehmotor W1 l ,thereby erete more or less repidiy. Y l l The coiupetment 114s of the box G contains e veive 131, that have e; fleeing' L1320i suitable iieihle materiel., this Yfacing consti-- tuting eiso e hiuge'for the veiveend being be ceusedtoopfastened et l to' the oecro the comporte ment. The ielve 131 is erreiiged'inrontof pei-t 13e, which opens into elisnnei 10,

und the Valve cerres en errn- 135, that sloosely secured on the'velve by oserei? 136, the?, is not screwed down quite. tight, sothet the erm iles e slight movement independentiy ofthe vaive. Aspirei spring 137 is et'- fool tsohed to the erm i135 etone end and et the other end to the upper end of; the box.

cranio-erm 138 is carried by the rock-shaft 28, this crook-erm bein so positioned onthe shaft that' when-the shat is rocked togsuch en extent :is to ceuse the crank 125 -to Contact with the erm 129 of the Velvef'fthe crankerm 138 will simultaneously 'Contact with the erm 135, so that et the extreme vposition l of the rock-shaft the veli/e lwillbeopened IIC.

end the'velvell Will be closed. The con'- duit 12 opens into compartment 114, and

ltherefore' when v eve 131 is closed the suction of tliemain bellows wiil no `longer affect the action mechanism of theinstrlmient At this time, es 4the veives 122 end 126 are Opened tot-heir fullest extent and the tem opower of the mein bellows will be exerted operating themotoreloo and the 'motor will be caused to run et greet' speed, so as tore]- Wind the perforated sheet ofipeper rery'rapidly upon the pe, er-roll.

; of oid and wenimoWnl form end ne'ed not Tite motmn us'portion of theeppolietuej be particularly described. lt is su liieient to i that it-consists cfu plurality ol bellows I'l, eacliol which is fitted with e. slide-vulve '172, the 'slide-vulves being'connccted to the.

cranks of motor-shaft l5, so that the crank revolves air will be alternately edn'iitted end out off 'from the seperate bellows ol' the niotor, and these being caused to collrtpse' bythe. exhaustion of eir through conduit i3 und expended by suitable springs the motor-shaft will be caused to revolve constiintlyiii the one direction.

The vector-pressure :legitieme-The motorressure reguletor'l is in the fioriu of e. belows, and the. movable board H3 thereof cei'- n ries .e loosely-suspended strip 17e of flexible materiel, that is adapted to more or less close 'a port 175,"thet leads into the channel 10.

The channel l17 lendsv into' the interior ci' the regulator F, and the function ol the regulator is to inninttiin un equal pressure inthe su"- tion between the main reservoir and the pneumatic-action and the motor. This is :recoinlished by the movement ol:v the movable 'beard 173, which moves with each variation ci the suction, und by the strip 174, which- .in the tracker-box being put iii motion nir will he successively admitted to the' pri maryboerd borings, so es to opcrzitcthe proper pneuuietics, and thus play the notes celled for by Vthe particular i'iiusic-sliect in the trechter-box. The shecin or phrusing cffects ere produced by the manipulation of the levers 20, 21, and 22 in the meni'ier lieieiiibefore described, und .the tempo of the composition :is controlled by the inovc ism', to one side or the other of the teiiipo-lever. .When the `musicsheet has been entirely .uiirolled from the paper-roll sind onto the take-up roll, the tempo-lever is moved in toward the .fend of the tracker-box, and by the mechanism hereinbefore described the action ofthe peper-roll undV the take-u roll are reversed sind the music-sheet `ill ie rerolled on the peper-roll, the suction dnringthis Winding enig-cut frorn'tliepneumstic fiction und eerteerwiioily upon t'ne motor by the operetienof valves in the coi'itroller-box in themeniier heieinhefcre fully described. Herring described my inrei'ition, l claiml. in mechanical iiiusicel instrument, the

of e piene, pneuin" cally-operthe cese ieee-usnisin contained wi Isis-:Lees

of the pia-no.i belorvwtlie level. ofthe keyboard und det'ucl'inbly attached to the piano-onse und e tracker-box carried by said mechan- Vism und. zirrmiged exterior oi the cese.

The combination ment, of inovebly ment end u movable tracker-box located outside of said. case and pivotiilly attached. to seid playing attachment. Y

3. The coiiibiiistion with a musical instrument having lieyboerd, of n complete injen keyed instrue '.uiecliziniciii pli-.ying nttuclinient attached to the cese ol" the in'stru-.

chemical playing attachment hinged wit-hin' the cese oi' the instrument behind the lower iront boord thereof.'

d. The combination with s musical instrument having e keyboard., of inecliiniciil pliiying apparatus niovebly attached to the cese i ofthe' iiistruinei'it,.Kay tracker-box arranged outside the cese oic the instrumen-t, endsupported by sind playing apparatus, end. pedals arranged outside the case sind supported by the playing apparatus.

5. The combination .with e keyboard instrumen-t, of mechanical playing apparatus movubly iii-.ranged within the case ol'the instrument and a folding pedal board o'rl'rsiiic supported 'from the framing of the playing. apps. etus und arranged outside of sind cese. A

6. ln un zippers-tus of the class described, a incclniniciil pleying iippurstus adapted to bc nioviiblyuttiiclicd to the case 'oi' :i musical instrument, ii. pivotelly-supported truckerhox adapted to be arranged externally ol" f seid wismsiud trucker-box being connected to and supportci by seid playing apparatus, wielding pedal boord or. trniiielntti-clied to IOS und supported bv sind playing appui-utils,l

:ind pedals hinged to seid board or lininc.

7. The combinntion with n keyed insfuinem, ol' pi'icuinnliciillyism lor playing such instrument mechanically, scid nicciinnisni i'onipiisiiig pedal mechanism, ii ti';i.:l-:cr-bo;\., :urci;pression-control- .'lci, :i motor, iniiter-coiitrollei mechanism, :i

motor-pressure regulator, und pur-,iiiiiutic-zuition dcviccs, ull mounted .in relatively coactive positions ony u suitable l'runic, und seid lrnme beiiw eri-ringed within the ense oi the piano und )hinged iit'oiie, end so iis to swing outwardly from `within thc cese, substrintisilly sis described.

8. The combina-tin with a keyed instrunient, of pncuinuticelly-operntcd mechanical. laying Incchziuisin comprisiiigpedals, b'clows, pncumsitics. sind a trucker-box connected fogli-.ther `and supported by supporting ins common to all, said supporting means being disposed Within the case of the instrunient and hinged et one endv to seid cese, as set forth.

9. The combination with a keyed instru-l opcretcd mcclumy irc andern;V motor-controlling means, pneumaticactlon devlees, pneumetlc-astma-controlling devicesi e tracker-box ande padel-'beeld oar- .med by seid frame.

1G. The ombnation with e musiealnstrument cese and eenen, of mechanical playing eppeiatus', including @ecker-box, motor-I pneumetios, bellwsfpeeals and appartenant paits, seid playing apparatus being arranged 

